/*
Theme Name: PROJECT 150X Child
Theme URI: https://project150x.com/
Description: Дочерняя тема для PROJECT 150X - научно-исследовательский проект о долголетии и регенеративной медицине
Author: PROJECT 150X Team
Author URI: https://project150x.com/
Template: generatepress
Version: 1.0.0
Text Domain: project150x
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
*/

:root {
    --color-black: #111;
    --color-white: #fff;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;
    --color-accent: #0055ff;
    --color-accent-hover: #0044cc;
    --color-accent-light: rgba(0, 85, 255, 0.1);
    --color-success: #10b981;
    --color-error: #ef4444;
    --color-warning: #f59e0b;

    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;

    --line-height-tight: 1.1;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;

    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;

    --container-max: 1200px;
    --container-narrow: 800px;
    --container-text: 700px;

    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --border-radius-full: 9999px;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    --header-height: 80px;
    --header-height-mobile: 64px;

    --fa-style-family: "Font Awesome 7 Pro";
    --fa-font-weight: 900;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-black: #fff;
        --color-white: #111;
        --color-gray-100: #171717;
        --color-gray-200: #262626;
        --color-gray-300: #404040;
        --color-gray-400: #737373;
        --color-gray-500: #a3a3a3;
        --color-gray-600: #d4d4d4;
        --color-gray-700: #e5e5e5;
        --color-gray-800: #f5f5f5;
        --color-gray-900: #fff;
    }
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-black);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

a:hover {
    text-decoration: none;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--spacing-4);
    font-weight: 700;
    line-height: var(--line-height-tight);
    color: var(--color-black);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
    margin: 0 0 var(--spacing-4);
    line-height: var(--line-height-relaxed);
}

ul, ol {
    margin: 0 0 var(--spacing-4);
    padding-left: var(--spacing-6);
}

li {
    margin-bottom: var(--spacing-2);
}

button {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

.container-narrow {
    max-width: var(--container-narrow);
}

.container-text {
    max-width: var(--container-text);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: 600;
    line-height: 1.5;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-black);
    border: 1px solid var(--color-gray-300);
}

.btn-secondary:hover {
    background-color: var(--color-gray-100);
    border-color: var(--color-gray-400);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
}

.btn-outline:hover {
    background-color: var(--color-accent-light);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
}

.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-xs);
}

.section {
    padding: var(--spacing-16) 0;
}

.section-sm {
    padding: var(--spacing-10) 0;
}

.section-lg {
    padding: var(--spacing-24) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-12);
}

.section-header-left {
    text-align: left;
    margin-bottom: var(--spacing-12);
}

.section-tagline {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: var(--spacing-3);
}

.section-title {
    margin-bottom: var(--spacing-4);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    max-width: var(--container-text);
    margin-left: auto;
    margin-right: auto;
}

.section-header-left .section-description {
    margin-left: 0;
    margin-right: 0;
}

.grid {
    display: grid;
    gap: var(--spacing-6);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

.card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--color-gray-300);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.card-image {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}

.card-content {
    padding: var(--spacing-6);
}

.card-category {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    margin-bottom: var(--spacing-2);
}

.card-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-3);
}

.card-excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-4);
    line-height: var(--line-height-relaxed);
}

.card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-accent);
    transition: gap var(--transition-fast);
}

.card-link:hover {
    gap: var(--spacing-2);
}

.card-link::after {
    content: "\f061";
    font-family: var(--fa-style-family);
    font-weight: var(--fa-font-weight);
    font-size: var(--font-size-xs);
    transition: transform var(--transition-fast);
}

.card-link:hover::after {
    transform: translateX(2px);
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.skip-link {
    position: absolute;
    top: -100%;
    left: var(--spacing-4);
    z-index: 10000;
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--color-accent);
    color: var(--color-white);
    font-weight: 600;
    border-radius: var(--border-radius-md);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--spacing-4);
}

@media (max-width: 1024px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.375rem;
        --font-size-2xl: 1.125rem;
        --header-height: var(--header-height-mobile);
    }
    .section {
        padding: var(--spacing-10) 0;
    }
    .section-lg {
        padding: var(--spacing-16) 0;
    }
    .container {
        padding: 0 var(--spacing-4);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.6s ease forwards;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s ease forwards;
}

.animate-zoom-in {
    animation: zoomIn 0.6s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes zoomIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

::selection {
    background-color: var(--color-accent);
    color: var(--color-white);
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--color-gray-400);
    border-radius: var(--border-radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-500);
}